ball sack vs wretch

ball sack

noun
  • An objectionable person (especially a man). 

  • The scrotum. 

wretch

noun
  • An unpleasant, annoying, worthless, or despicable person. 

  • An unhappy, unfortunate, or miserable person. 

How often have the words ball sack and wretch occurred in a corpus of books? (source: Google Ngram Viewer )